/Engine/Source/Editor/SequencerCore/Public/MVVM/ViewModels/ViewModelHierarchy.h
W A R N I N G : DO NOT USE DIRECTLY UNLESS YOU KNOW WHAT YOU'RE DOING! This structure won't correctly update the data models' parent pointers, which can lead to problems. Use the methods onFViewModel. This link structure is mostly private anyway.
struct FViewModelListLink